Parasol with high space utilization

ABSTRACT

The present invention relates to a sun-blocking parasol in which a shank for supporting a sunlight shielding part is positioned at one side of the sunlight shielding part to improve space utilization. To accomplish the above object, the present invention provides a parasol including a plurality of ribs each of which has one end stacked into layers and connected with each other such that the ribs are rotatable, a sunlight shielding part having a sunlight shielding cloth for connecting the ribs, connectors mounted on the other end of the uppermost rib and mounted on the other end of the lowermost rib, respectively, and a shank coupled to the connectors in a state where the connector on the uppermost rib and the connector on the lowermost rib are connected to each other.

TECHNICAL FIELD

The present invention relates to a parasol blocking sunlight, particularly a parasol having high space utilization by disposing a support that supports a light shield at a side of the light shield.

BACKGROUND ART

In the accompanying drawings, FIG. 1 is a schematic view showing a parasol according to the related art.

According to a parasol 1 of the related art, as shown in FIG. 1, a vertical support 5 is positioned at the center of a light shield 3 that is radially open, such that only the area that the vertical support 5 does not occupy is available in the shade formed by the light shield 3. That is, since the vertical support 5 is positioned inside the shade, spatial usefulness of the shade is reduced.

DISCLOSURE Technical Problem

The present invention has been made to solve the problems of the related art, which is described above, and it is an object of the present invention to provide a parasol that is designed to maximize an available shade formed by a light shield by disposing a support at one side of the edge of the light shield when the light shield is open.

Further, it is another object of the present invention to implement both of a common parasol (one-story parasol) and a draft parasol (two-story parasol), which are individually manufactured and produced, with one parasol.

Further, it is another object of the present invention to provide a parasol having high light-shielding effect by making the angle of the light shield adjustable in accordance with the position of the sun.

Technical Solution

In order to achieve the objects of the present invention, a parasol includes: a light shield having a plurality of ribs rotatably combined, with predetermined ends stacked, and light shield cloths connecting the ribs; fastening portion formed at the other end of an upper rib at the uppermost position and the other end of a lower end at the lowermost position in the plurality of ribs; and a support combined with the fastening portions, with the fastening portion of the upper rib and the fastening portion of the lower rib combined with each other.

Further, according to a preferred embodiment of the present invention, a ring is fixed to predetermined ends of the ribs and a nut is tightened to a male-threaded portion formed at an end of a first rotary shaft which passes through the rings of the ribs.

Further, according to a preferred embodiment of the present invention, the upper rib and the lower rib are formed in plate shapes with the length larger than the width.

Further, according to a preferred embodiment of the present invention, the rib between the upper rib and the lower rib has two elastic portions having predetermined end fixed to the rings and a connecting portion connecting the other ends of the two elastic portions.

Further, according to a preferred embodiment of the present invention, in two light shield cloths at both sides of an elastic rib, the left light shield cloth is fixed to the right elastic portion of the two elastic portions and the right light shield cloth is fixed to the left elastic portion of the two elastic portion such that the light shield cloths overlap each other up and down.

Further, according to a preferred embodiment of the present invention, one side of each of the light shield cloths is fixed to the upper rib and the lower rib and the other side is fixed to the further elastic portion of the two elastic portions of the elastic rib adjacent to the upper rib and the lower rib.

Further, according to a preferred embodiment of the present invention, the parasol further includes a fixing means that fixes the light shield cloths overlapping each other inside the connecting portion of the elastic rib.

Further, according to a preferred embodiment of the present invention, a combining portion is formed at the other ends of the upper rib and the lower rib to be combined with each other, such that the upper rib and the lower rib are aligned up/down and combined by the combining portions.

Further, according to a preferred embodiment of the present invention, the connecting portion has a female-fastening portion fixed to any one of the upper rib and the lower rib and a male-fastening portion fixed to the other, and the female-combining portion and the male-combining portion are fastened or separated.

Further, according to a preferred embodiment of the present invention, the female-fastening portion is formed in a semicircular pipe shape opening to the outside of the light shield and the male-fastening portion has a semicircular protrusion protruding to the inside of the light shield, such that the female-fastening portion and the male-fastening portion are fastened by inserting the semicircular protrusion into the semicircular pipe.

Further, according to a preferred embodiment of the present invention, the female-fastening portion and the male-fastening portion are combined with each other and fitted in a hole formed at the upper end.

Further, according to a preferred embodiment of the present invention, the parasol includes: a first connector that is fixed to the other end of the upper rib, mounted in a holder formed at the upper end of the support, and pivots up/down in the holder; and a second connector that is fixed to the other end of the lower rib and inserted or pulled in/out of the holder in accordance with the up-down pivot of the first connector.

Further, according to a preferred embodiment of the present invention, the holder has two lugs formed opposite to each other in the up-down direction and a second rotary shaft fixed between the lugs and passing through the first connector.

Further, according to a preferred embodiment of the present invention, a depression is formed on any one side of the facing surfaces of the first connector and the second connector, and a convex portion corresponding to the depression is formed on the other side.

Further, according to a preferred embodiment of the present invention, a plurality of grooves is formed along an arc having the second rotary shaft as the center, in the first connector or the second connector which rotates about the second rotary shaft, and protrusions that are fitted in the grooves are formed on the inner sides of the lugs.

Further, according to a preferred embodiment of the present invention, the second rotary shaft passes through the two lugs and the first connector and has a male-threaded portion at an end where a nut is tightened to press or loosen the lugs.

ADVANTAGEOUS EFFECTS

As described above, the parasol of the present invention can use the entire shade formed by the light shield because the vertical support is positioned at one side of the edge of the light shield when the light shield is open.

Further, the parasol of the present invention is light and has little small faults, because the configuration of opening and closing the light shield is simple, sub-ribs for the ribs of the light shield cloths are not required, and related parts are not required.

Further, the parasol according to the present invention provides the users in the shade with a pleasant environment because the light shield blocks the sunlight and allows air to easily pass.

Further, the parasol of the present invention can improve the light shield effect by adjusting angle of the light shield in accordance with the position of the sun, because it is possible to adjust the angle of the light shield with respect to the vertical support.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic view showing a parasol according to the related art.

FIG. 2 is a conceptual view of the parasol according to the present invention.

FIG. 3 is a schematic view showing the structure of ribs of a light shield according to a first embodiment of the present invention,

FIGS. 4 and 5 are perspective views showing a process of opening the light shield in accordance with the structure of ribs shown in FIG. 3, and

FIG. 6 is a schematic view showing only the ribs when the light shield is closed.

FIG. 7 is a perspective view showing a combining portion for combining an upper rib with a lower rib in the parasol.

FIG. 8 is a schematic view showing the structure of ribs of a light shield according to a second embodiment of the present invention,

FIGS. 9 to 11 are perspective views showing a process of opening the light shield in accordance with the structure of ribs shown in FIG. 8,

FIG. 12 is a transverse cross-sectional view showing elastic deformation of the ribs when the light shield shown in FIG. 9 opens, and

FIG. 13 is a schematic view showing various types of elastic ribs.

FIG. 14 is a front view showing the joint of a combining portion, which combines an upper rib with a lower rib, and a vertical support of the parasol,

FIG. 15 is a perspective view showing the first connector for the upper rib, and

FIG. 16 is a perspective view showing a second connector for the lower rib.

FIG. 17 is a cross-sectional view showing the joint of the combining portion and the vertical support,

FIG. 18 is a perspective view showing the inside of a holder, and

FIG. 19 is a perspective view showing the inside of another opposite holder.

FIG. 20 is a cross-sectional view illustrating the operation of the combining portion in accordance with angles of the light shield and

FIG. 21 is a front view showing the joint when the light shield is opened or closed.

FIG. 22 is a partial cross-sectional view showing the inside of a holder according to a fourth embodiment,

FIG. 23 is a schematic view showing a second rotary shaft fitted in the holder,

FIG. 24 is a side view showing a first connector for an upper rib, and

FIG. 25 is a second connector for a lower rib.

REFERENCE NUMERALS

-   100: Parasol -   103: Light shield -   105: Vertical support -   110: Lighe shield cloth -   111: Rope -   113: Snap button -   121: Upper rib -   122: Lower rib -   123: Elastic rib -   124: Middle rib -   125: Inclined portion -   127: Bending portion -   129: Gap -   130: Ring -   131: Nut -   141: First rotary shaft -   142: Male-threaded portion -   150: Combining portion -   151: Female-fastening portion -   153: Semicircular pipe -   155: Male-fastening portion -   157: Semicircular protrusion -   161: First connector -   161R: Through-hole -   161S, 162S: Slot -   161H, 162H: Depression -   162: Second connector -   161P, 162P: Covex portion -   163: Groove -   170: Holder -   171: Lug -   173: Protrusion -   175: Second rotary shaft

MODE FOR INVENTION

Parasols according to exemplary embodiments of the present invention are described hereafter in detail with reference to the accompanying drawings.

First Embodiment

In the drawings, FIG. 2 is a conceptual view of the parasol according to the present invention. FIG. 3 is a schematic view showing the structure of ribs of a light shield according to a first embodiment of the present invention, FIGS. 4 and 5 are perspective views showing a process of opening the light shield in accordance with the structure of ribs shown in FIG. 3, and FIG. 6 is a schematic view showing only the ribs when the light shield is closed.

A common feature of parasols 100 descried hereafter is, as shown in FIG. 2, to be able to use the entire shade formed by a light shield 103 by positioning a vertical support 105 supporting the light shield 103 at one side of the edge of the light shield 103, when the light shield 103 is open.

A first embodiment of the present invention for achieving this configuration is described hereafter in detail.

As shown in FIGS. 3 to 6, the light shield 103 radially opens and includes a plurality of ribs 121, 122, 124 holding a light shield cloth 110, while a ring 130 is formed at the ends of the ribs 121, 122, 124 which are positioned at radial center. Further, a first rotary shaft 141 is fitted in the holes of the rings 130, with the ribs 121, 122, 124 stacked, and a nut is tightened at the end of the first rotary shaft 141 which passes through the rings 130.

Therefore, the ribs 121, 122, 124 are radially opened while rotating about the first rotary shaft 141, and stacked when being folded.

In the stacked ribs 121, 122, 124, a lower rib 122 is positioned at the lowermost portion, an upper rib 121 is positioned at the uppermost portion, and middle ribs 124 are positioned between the lower rib 122 and the upper rib 121.

The upper rib 121, middle ribs 124, and lower rib 122 are formed in a plate shape with the length longer than the width and have rigidity for supporting the light shield 103. Further, the ends of the upper rib 121, middle ribs 124, and lower rib 122 are fixed by the nut 131 and the first rotary shaft 141 fitted in the rings 130 and the other ends are fixed to the upper end of the vertical support 105 by fastening portions 151, 155 combined with each other, when the light shield cloth 110 is open. When the light shield 103 is open, as described above, the bodies of the upper rib 121 and the lower rib 122 are fixed in parallel at a predetermined distance while making the cross section of an H-beam without webs and with two plates functioning as flanges, such that rigidity is considerably increased in comparison with using one rib, and accordingly, the can sufficiently bear against external force, such as wind and the weight of the light shield 103 and the ribs 121, 122, 124. Further, the middle ribs 124 elastically deform to give rigidity to the open light shield 103, when the light shield 103 is open, and have various shapes of cross sections, including a circular pipe or a bar.

A nut 131 is tightened to a male-treaded portion 142 at the upper end of the first rotary shaft 141 which passes through the ring 130 of the lower rib 122 at the lower most position, the rings 130 of the middle ribs 124, and the ring 130 of the upper rib 121.

Therefore, the middle ribs 124 and the upper rib 121 can rotate about the first rotary shaft 141.

Meanwhile, the light shield cloth 110 is fixed to the ribs 121, 122, 124, as shown in FIGS. 4 to 6. The light shield cloth 110 is attached and fixed to the upper surfaces of the ribs 121, 122, 124, such that as the upper rib 121 rotates about the first rotary shaft 141, the light shield cloth 110 opens and takes the middle ribs 124 to be rotated and opened.

As described above, when the light shield 103 is opened by rotating the upper rib 121, the upper rib 121 overlaps the lower rib 122, in which the light shield 103 is fixed by fastening the combining portions 150 at the ends of the lower rib 122 and the upper rib 121.

The combining portions are fastened to the vertical support 105, with the upper rib and the lower rib combined by combining portions 150.

The combining portion 150 combining the upper rib with the lower rib is described hereafter.

FIG. 7 is a perspective view showing a combining portion for combining an upper rib with a lower rib in the parasol.

As shown in FIG. 7, a female-fastening portion 151 bending down is formed at the end of the lower rib 122 and a male-fastening portion 155 bending down is also formed at the end of the upper rib 121.

The female-fastening portion 151 is formed in a semicircular pipe 153 formed by longitudinally cutting a circular pipe and extends downward from the end of the lower rib 122, while the male-fastening portion 155 has a semicircular protrusion 157 that is fitted in the female-fastening portion 151 having a semicircular pipe 153 and extends downward from the end of the upper rib 121.

Therefore, when the upper rib 121 is positioned above the lower rib 122, the semicircular protrusion of the male-fastening portion 155 is fitted in the semicircular pipe 153 of the female-fastening portion 151 while elastically deforming, such that the male-fastening portion 155 and the female-fastening portion 151 are fastened.

Meanwhile, with the male-fastening portion 155 fitted in the female-fastening portion 151, the combining portion 150 is fitted in a hole at the upper end of the vertical support 103 (see FIG. 2) such that the light shield portion 103 is fixed to the upper end of the vertical support 105.

The open light shield 103 is closed by separating the combining portions 150 and rotating the upper rib 121 clockwise about the first rotary shaft 141 such that the middle ribs 124 are positioned between the upper rib 121 and the lower rib 122, in which the light shield 103 is kept folded by combining again the combining portions 150.

Second Embodiment

Comparing with the parasol of the first embodiment, the second embodiment has a difference in the configuration of middle ribs and the light shield cloth is divided and fixed to the ribs in accordance with the difference in the configuration.

FIG. 8 is a schematic view showing the structure of ribs of a light shield according to a second embodiment of the present invention, FIGS. 9 to 11 are perspective views showing a process of opening the light shield in accordance with the structure of ribs shown in FIG. 8, FIG. 12 is a transverse cross-sectional view showing elastic deformation of the ribs when the light shield shown in FIG. 9 opens, and FIG. 13 is a schematic view showing various types of elastic ribs.

As shown in FIGS. 8 to 11, the light shield 103 radially opens and includes a plurality of ribs 121, 122, 123 holding a light shield cloth 110, while a ring 130 is formed at the ends of the ribs 121, 122, 123 which are positioned at radial center. Further, a first rotary shaft 141 is fitted in the holes of the rings 130, with the ribs 121, 122, 123 stacked, and a nut is tightened at the end of the first rotary shaft 141 which passes through the rings 130. Therefore, the ribs 121, 122, 123 are radially opened while rotating about the first rotary shaft 141, and stacked when being folded.

In the stacked ribs 121, 122, 123, a lower rib 122 is positioned at the lowermost portion, an upper rib 121 is positioned at the uppermost portion, and elastic ribs 123 are positioned between the lower rib 122 and the upper rib 121.

The upper rib 121 and lower rib 122 are formed in a plate shape with the length longer than the width, as described in the first embodiment, and have rigidity for supporting the light shield 103. Further, the elastic ribs 123 provide the light shield 103 with rigidity while elastically transforming, when the light shield 103 is open. The elastic rib 123 is composed of two elastic portions 125 having a U-shape and connected to a ring 130 and a connecting portion 127 connecting the elastic portions 125, and the elastic portions 125 and the connecting portion 127 may be integrally formed.

In the upper rib 121, lower rib 122, and elastic ribs 123, which are formed in the configuration described above, a first rotary shaft 141 passes through the rings of the ribs 121, 122, 123 and a nut 131 is tightened to a male-treaded portion 142 at the upper end of the first rotary shaft 141.

Therefore, the elastic ribs 123 and the upper rib 121 can rotate about the first rotary shaft 141.

Meanwhile, the light shield cloth 110 is fixed to the ribs 121, 122, 123, as shown in FIGS. 9 to 12. The light shield cloth 110 has a size such that it is positioned between the ribs 121, 122, 123 to block the sunlight when the ribs 121, 122, 123 are developed at regular angles, in which one side of the light shield cloth 110 is fixed to the lower rib 122 and the other end of the light shield cloth 110 is fixed to the elastic member further from the lower rib 122, in the two elastic members 125 of the elastic rib 123. Further, one side of another light shield cloth 110 is fixed to the other elastic portion without the fixed light shield cloth 110 and the other side of the another light shield cloth 110 is fixed to the further elastic portion in the two elastic portions of another adjacent elastic rib 123. The lower rib 122 and the elastic rib 123, the elastic rib 123 and another elastic rib 123, and the another elastic rib 123 and the upper rib 121 are connected by the light shield cloths 110, in this way.

As described above, when the light shield 103 is opened by rotating counterclockwise the upper rib 121, the upper rib 121 overlaps the lower rib 122, in which the light shield 103 is fixed by fastening the combining members 150 at the ends of the lower rib 122 and the upper rib 121.

Meanwhile, when the light shield 103 is open such that force is not applied to the elastic ribs 123, as shown in FIGS. 9 and 12A, the elastic ribs 123 doe not elastically deform and the two elastic members 125 are positioned to maintain a predetermined distance. Further, as shown in FIGS. 11 and 12B, when the upper rib 121 is further pulled by a user such that the upper rib 121 overlaps the lower rip 122 and the upper rib 121 is positioned over the lower rib 122, after the light shield cloth 110 is fully developed, the light shield cloth 110 is tensed and the two elastic portions 125 of the elastic ribs 123 elastically deform, as shown in FIG. 12B, in which when the connected light shield cloths 110 are tensed, the two elastic portions 125 connected to the ring 130 do not move in accordance with the position, but they are twisted as being close to the middle portion, such that the two elastic portions 125 are gradually vertically deformed from the horizontal position. Since the two elastic portions 125 of the elastic rib 123 are twisted and gradually deformed vertically when the light shield 103 is open, air can easily flow through between the two elastic portions 125 which are vertically deformed from the horizontal position as being close to the ends.

The upper rib 121 and the lower rib 122 overlapping each other are combined by the combining portions 150 and then fastened to the vertical support 105 shown in FIG. 2.

Meanwhile, the elastic rib 123, as shown in FIG. 13, may have a modified shape as shown in (b), other than a U-shaped in (a), the object of the elastic rib 123 can be sufficiently achieved, even if the shape of the elastic rib 123 changes.

Meanwhile, a snap button 113 fixing the light shield cloths 110 overlapping up and down is mounted on the inner side of the connecting portion 127 of the elastic rib 123. Alternatively, though not shown, a ring is formed at two positions where the two elastic portions 125 and the connection portion 127 are connected and the rings are held to the light cloth 110 corresponding to the opposite side. The snap button 113 and the ring are fixing means and the light shield cloths 110 overlapping up and down are fixed by them, such that two inclined portions 125 of the elastic rib 123 is kept horizontal and overlapping up and down, even if the light shield cloths 110 are pulled, and accordingly, it is possible to prevent rain or cold wind from flowing inside through the gap 129 between the two inclined portions of the elastic rib 123.

Third Embodiment

As another embodiment of the fastening member described above, it is possible to adjust angle of the light shield with respect to the vertical support, with the vertical support and the light shield are combined.

In the drawings, FIG. 14 is a front view showing the joint of a combining member, which combines an upper rib with a lower rib, and a vertical support of the parasol, FIG. 15 is a perspective view showing the first connector for the upper rib, and FIG. 16 is a perspective view showing a second connector for the lower rib. FIG. 17 is a cross-sectional view showing the joint of the connector and the vertical support, FIG. 18 is a perspective view showing the inside of a holder, and FIG. 19 is a perspective view showing the inside of another opposite holder. FIG. 20 is a cross-sectional view illustrating the operation of the connector in accordance with angles of the light shield and FIG. 21 is a front view showing the joint when the light shield is opened or closed.

Further, in describing a parasol according to a third embodiment, the description and figures of the elastic rib 123 and the light shield cloth 110 are described in detail in connection with the first embodiment and the second embodiment; therefore, the detailed description is not provided.

As shown in FIGS. 2 and 14, the vertical support 105 supporting the light shield 103 has a holder 170 at the upper end, a first connector 161 fixed to the end of the upper rib 121 is mounted in the holder 170, and the second connector fixed to the end of the lower rib 122 is combined with the first connector 161 and inserted in the holder 170, or the second connector 162 is pulled out of the holder 170 and then separated from the first connector 161.

In this configuration, when the light shield 103 is open or closed, the second connector 162 is combined with the first connector 161 and then inserted in the holder 170, and while the light shield 103 is opened or closed, the second connector 162 is pulled out of the holder 170 and then separated from the first connector 161.

This configuration is described in detail.

The holder 170 fitted on the upper end of the vertical support 105 is fixed upward with two lugs 171 facing each other.

Further, the first connector 161 shown in FIG. 15 is disposed to be rotatable between the two lugs 171. The first connector 161 has a slot 161S at one side such that the upper rib 121 is inserted in the slot 161S, and a depression 161H is formed on the bottom of the first connector 161. The depression 161H is arranged in the longitudinal direction of the slot 161S. Further, a through-hole 161R is formed at the middle portion of the first connector 161 in the same direction as the slot 161S and the depression 161H, in which a second rotary shaft 175 passing through the two lugs 171 is fitted in the through hole 161R. Therefore, the first connector 161 can rotate about the second rotary shaft 175, and as the first connector 161 rotates the upper rib 121, that is, the light shield 103 pivot up/down about the second rotary shaft 175.

As the first connector 161 pivots about the second rotary shaft 175, the depression 161H of the first connector 161 is positioned outside the lugs 171. That is, when the light shield 103 is lifted up, the depression 161H is positioned outside the lugs 171. Further, when the light shield 103 is substantially vertically positioned with respect to the vertical support 105, the depression 161H is positioned inside the lugs 171, that is, in the holder 170.

Meanwhile, as shown in FIGS. 16 to 21, the second connector 162 is positioned under the first connector 161. The second connector 162 has a slot 162S at one side such that the lower rib 122 is fitted in the slot 162S. Further, a convex portion 162P that is fitted in the depression 161H is formed on the top of the second connector 162. Further, grooves 163 are formed along an arc about the second rotary shaft 175, on one side opposite to the lug 171. Protrusions 173 corresponding to the grooves 163 are also formed on the inner side of the lug 171. When the protrusions 173 are fitted in the grooves 163, the second connector 162 cannot rotate about the second rotary shaft 175.

The combining force between the grooves 163 and the protrusions 173 has a magnitude such that the light shield 103 does not pivot about the second rotary shaft 175 by external force. When the user pulls the holder 170 from the support 105 and forcibly pivots it up/down, with the light shield 103 fixed, the grooves 163 and the protrusions 173 are separated by elasticity 171 fixed to the second rotary shaft and the holder 170 is rotated. Therefore, the user adjust the angle to a desired level while the light shield 103 is not pivoted by the combining force between the grooves 163 and the protrusions 173, by fitting the holder 170 on the upper end of the support 105 after adjusting up/down the angle of the light shield 103.

In this structure, the user pushes the closed light shield 103 upward, as shown in FIG. 21, in order to open the light shield 103. Accordingly, the light shield 103 pivots up/down about the second rotary shaft 175 of the holder 170 while the depression 161H of the first connector 161 and the second connector 162 come out of the holder 170. In this process, the grooves 163 of the second connector 162 and the protrusions 173 of the lug 171 are separated. When the second connector 162 comes out of the holder 170, as described above, the light shield 103 can pivot about the first rotary shaft 141, such that it is opened. That is, when the lower rib 122 rotates about the first rotary shaft 141 and the light shield 103 opens, the second connector 162 is positioned again under the first connector 161, such that the depression 161H of the first connector 161 is fitted on the convex portion 162P of the second connector 162.

In this position, the user pivots down the open light shield 103. Accordingly, the first connector 161 and the second connector 162 come in the holder 170, that is, between the two lugs 171. The grooves 163 of the second connector 162 are fitted on the protrusions 173 of the rungs 171, and when the user fits the holder 170 on the top of the support 105 after adjusting the angle of the light shield 103 by applying force, the light shield 103 can be prevented from pivoting due to external force, with the protrusions 173 fitted in the grooves 163.

Fourth Embodiment

As another embodiment of the fastening member of the third embodiment described above, it is possible to adjust angle of the light shield with respect to the vertical support, with the vertical support and the light shield are combined.

In the drawings, FIG. 22 is a partial cross-sectional view showing the inside of a holder according to a fourth embodiment, FIG. 23 is a schematic view showing a second rotary shaft fitted in the holder, FIG. 24 is a side view showing a first connector for an upper rib, and FIG. 25 is a second connector for a lower rib.

As shown in FIGS. 22 and 23, a holder includes a pair of lugs 171, a second rotary shaft 175, and a first connector 161, as described in connection with the third embodiment. A difference of the holder 170 according to the fourth embodiment and that of the third embodiment is, as shown in FIGS. 24 and 25, that a groove 163 is formed on both sides of the first connector 161 and the second connector 162, a protrusion 173 is formed on the inner sides of the lugs 171, a convex portion 161P is formed at the first connector 161, and a depression 162H is formed at the second connector 162.

Further, as shown in FIGS. 18 and 19, a convex portion and a depression are formed at the center of the front of the horizontal surface where a pair of holders 170 is in contact to rotate together about the second rotary shaft.

Further, although it is required to separate the holder from the support to adjust the angle of the light shield 103 in the third embodiment, in the fourth embodiment, as a nut 177 is tightened to the end of the second rotary shaft 175, with the holder 170 combined with the support, the lugs 171 press the first connector 161 and the second connector 162, such that the light shield 103 is fixed with the protrusions 173 of the lugs 171 fitted in the grooves 163 of the first connector 161. In order to adjust the angle of the light shield 103, it is required to adjust the angle of the light shield 103 with the nut 177 of the second rotary shaft 175 loosened, and after the angle of the light shield 103 is adjusted, the bolt inserted in the nut 177 is tightened to be fixed.

While certain embodiments have been described above, it will be understood to those skilled in the art that the embodiments described are by way of example only. The scope of the present invention is defined in the following claims and all changed or modified types derived from the meanings and scope of the claims and the equivalent concept thereof should be construed as being included in the scope of the present invention. Therefore, it is obvious that the present invention may be used for umbrellas and sunshades, in addition to parasols. 

1. A parasol comprising: a light shield having a plurality of ribs rotatably combined, with predetermined ends stacked, and light shield cloths connecting the ribs; fastening portion formed at the other end of an upper rib at the uppermost position and the other end of a lower end at the lowermost position in the plurality of ribs; and a support combined with the fastening portions, with the fastening portion of the upper rib and the fastening portion of the lower rib combined with each other.
 2. The parasol according to claim 1, wherein a ring is fixed to predetermined ends of the ribs and a nut is tightened to a male-threaded portion formed at an end of a first rotary shaft which passes through the rings of the ribs.
 3. The parasol according to claim 2, wherein the upper rib and the lower rib are formed in plate shapes with the length larger than the width.
 4. The parasol according claim 2, wherein the ribs between the upper rib and the lower rib has two elastic portions having predetermined end fixed to the rings and a connecting portion connecting the other ends of the two elastic portions.
 5. The parasol according to claim 4, wherein in two light shield cloths at both sides of an elastic rib, the left light shield cloth is fixed to the right elastic portion of the two elastic portions and the right light shield cloth is fixed to the left elastic portion of the two elastic portion such that the light shield cloths overlap each other up and down.
 6. The parasol according to claim 4, wherein one side of each of the light shield cloths is fixed to the upper rib and the lower rib and the other side is fixed to the further elastic portion of the two elastic portions of the elastic rib adjacent to the upper rib and the lower rib.
 7. The parasol according to claim 6, further comprising a fixing means that fixes the light shield cloths overlapping each other inside the connecting portion of the elastic rib.
 8. The parasol according to claim 2, wherein a combining portion is formed at the other ends of the upper rib and the lower rib to be combined with each other, such that the upper rib and the lower rib are aligned up/down and combined by the combining portions.
 9. The parasol according to claim 8, wherein the connecting portion has a female-fastening portion fixed to any one of the upper rib and the lower rib and a male-fastening portion fixed to the other, and the female-combining portion and the male-combining portion are fastened or separated.
 10. The parasol according to claim 9, wherein the female-fastening portion is formed in a semicircular pipe shape opening to the outside of the light shield and the male-fastening portion has a semicircular protrusion protruding to the inside of the light shield, such that the female-fastening portion and the male-fastening portion are fastened by inserting the semicircular protrusion into the semicircular pipe.
 11. The parasol according to claim 9, wherein the female-fastening portion and the male-fastening portion are combined with each other and fitted in a hole formed at the upper end.
 12. The parasol according to claim 2, comprising: a first connector that is fixed to the other end of the upper rib, mounted in a holder formed at the upper end of the support, and pivots up/down in the holder; and a second connector that is fixed to the other end of the lower rib and inserted or pulled in/out of the holder in accordance with the up-down pivot of the first connector.
 13. The parasol according to claim 12, wherein the holder has two lugs formed opposite to each other in the up-down direction and a second rotary shaft fixed between the lugs and passing through the first connector.
 14. The parasol according to claim 12, wherein a depression is formed on any one side of the facing surfaces of the first connector and the second connector, and a convex portion corresponding to the depression is formed on the other side.
 15. The parasol according to claim 13, wherein a plurality of grooves is formed along an arc having the second rotary shaft as the center, in the first connector or the second connector which rotates about the second rotary shaft, and protrusions that are fitted in the grooves are formed on the inner sides of the lugs.
 16. The parasol according to claim 13, wherein the second rotary shaft passes through the two lugs and the first connector and has a male-threaded portion at an end where a nut is tightened to press or loosen the lugs.
 17. The parasol according to claim 3, wherein the ribs between the upper rib and the lower rib has two elastic portions having predetermined end fixed to the rings and a connecting portion connecting the other ends of the two elastic portions.
 18. The parasol according to claim 17, wherein in two light shield cloths at both sides of an elastic rib, the left light shield cloth is fixed to the right elastic portion of the two elastic portions and the right light shield cloth is fixed to the left elastic portion of the two elastic portion such that the light shield cloths overlap each other up and down.
 19. The parasol according to claim 17, wherein one side of each of the light shield cloths is fixed to the upper rib and the lower rib and the other side is fixed to the further elastic portion of the two elastic portions of the elastic rib adjacent to the upper rib and the lower rib.
 20. The parasol according to claim 19, further comprising a fixing means that fixes the light shield cloths overlapping each other inside the connecting portion of the elastic rib.
 21. The parasol according to claim 10, wherein the female-fastening portion and the male-fastening portion are combined with each other and fitted in a hole formed at the upper end.
 22. The parasol according to claim 13, wherein a depression is formed on any one side of the facing surfaces of the first connector and the second connector, and a convex portion corresponding to the depression is formed on the other side. 